# Worksheet: Exterior Angles of a Triangle

In this worksheet, we will practice finding the measure of the exterior angle of a triangle and comparing between an exterior angle and its corresponding remote interior angles.

Q1:

What is the sum of the measures of the exterior angles of a triangle?

Q2:

Is , , or ? • A
• B
• C

Q3:

The figure shows some angles identified on triangle . Identify which angle is an exterior angle.

• A
• B
• C

Identify which angle is an interior angle.

• A
• B
• C

Q4:

Is the measure of two right angles less than, equal to or greater than the sum of the interior angles of a triangle?

• Aless than
• Bgreater than
• Cequal to

Q5:

The figure shows the exterior angles of a given triangle. Find the sum of the exterior angles. Q6:

What is the measure of an exterior angle of an equilateral triangle?

Q7:

Find . Q8:

Determine whether the following sentence is true or false: It is possible to draw a triangle on a plane with two obtuse angles.

• Atrue
• Bfalse

Q9:

In a triangle , if , what type of angle is the exterior angle at vertex ?

• Aright
• Breflex
• Cacute
• Dobtuse

Q10:

Which of the following inequalities is correct? • A
• B
• C
• D
• E